Taxes on Income - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Income Tax Disclosure [Abstract]
Undistributed earnings of foreign subsidiaries for income tax purposes	$ 1,700
Net income tax payments	683	$ 260	$ 419
Operating loss carryforwards	446
Total amount of federal, state and local, and foreign unrecognized tax benefits excluding interest and penalties	161	120	$ 118	$ 82
Increase in amount of unrecognized tax benefits that unfavorably impact tax expense	46
Accrued interest and penalties associated with uncertain tax positions	$ 44	$ 31